Abstract: Variations of an improved weight bar clamp are disclosed herein. A weight bar clamp includes a collar with two opposing walls that extend from a common end. The collar may be a one-piece collar or a multi-piece collar. The opposing walls may also include an arced interior surface and a plurality of structural ribs. The structural ribs extend in an arc partially between the common end and a terminating end of each opposing wall. The weight bar clamp may further include a biasing member that biases cam halves coupled to the opposing walls away from one another. The clamp further includes handle coupled to the cam halves. The clamp includes a cam opening configured to allow the cam halves to separate in an open position and push the cam halves toward each other in a closed position.

Abstract: A clamp (20) includes a first barrel half (26) and second barrel half (28). A hinge pin (30) pivotally couples a first edge (38) of the first barrel half (26) with a third edge (46) of the second barrel half (28). A spring (96) imposes force on the barrel halves (26, 28) to bias a second edge (40) of the first barrel half (26) away from a fourth edge (48) of the first barrel half (28) to create a gap (34) between edges (40, 48), placing the clamp (20) in an open position (22). A handle (32) includes a base (80) that abuts an outer surface (54) of the barrel halves (26, 28) to compel the second edge (40) of the first barrel half (26) toward the fourth edge (48) of the first barrel half (28) to close the gap (34), placing the clamp (20) in a closed position (22).